Hi sorry for late response I couldn't get onto my account yes I've tried the plastic ones and they are great but he just doesn't like them he appears to be a bit of a little diva and only wants his original cave so I've put it back and he's happy again but I have just ordered him a new Viv as he is way too big for it I only bought it as an emergency as the one I bought for him originally was well a wreck my fault for going preloved but that arrives today at some point I hope because a 1.8 foot by 1 foot just isn't going to cut it anymore he's grown a lot faster than I anticipated I just hope he is happy with his new Viv and he isn't going to be grumpy about me taking his old Viv like he was when I took his cave away but again thank you all for your help it is nice to know there are experienced people out there to ask for help